DOI: 10.47749/t/unicamp.2015.958318
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Estudo das propriedades no estado fresco e endurecido do concreto leve autoadensável

Abstract: vi vii RESUMO Com a descoberta de aditivos químicos e adições minerais muitos tipos diferentes de concreto surgiram ao longo das últimas décadas. Porém o peso próprio do concreto convencional é considerado a sua maior desvantagem. Com isso abre-se campo para um material que apesar de ser conhecido pelos romanos, era pouco utilizado, o concreto com agregados leves. Muitas pesquisas surgem e em aproximadamente duas décadas aparece o concreto autoadensável e mais recentemente o concreto leve autoadensável. Este t… Show more

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“…According to Schankoski et al (2017), diabase and gneiss fillers can be used as alternative materials to limestone fillers in SCC, although they may require a higher amount of superplasticizer additive. Superplasticizers are additives known as highefficiency water reducers, permitting a reduction of 30% of the water content, and optimizing the amount of cement and other binders (VERZEGNASSI, 2015). The excessive use of this additive can raise the cost of concrete and cause segregation and bleeding in concrete (HER-BUDIMAN; SAPTAJI, 2013), resulting in a reduction in durability and mechanical strength.…”
Section: Introductionmentioning
confidence: 99%
“…According to Schankoski et al (2017), diabase and gneiss fillers can be used as alternative materials to limestone fillers in SCC, although they may require a higher amount of superplasticizer additive. Superplasticizers are additives known as highefficiency water reducers, permitting a reduction of 30% of the water content, and optimizing the amount of cement and other binders (VERZEGNASSI, 2015). The excessive use of this additive can raise the cost of concrete and cause segregation and bleeding in concrete (HER-BUDIMAN; SAPTAJI, 2013), resulting in a reduction in durability and mechanical strength.…”
Section: Introductionmentioning
confidence: 99%